.navbar-toggler {
    display: none;
}
@media (max-width: 992px) {
    .navbar-toggler {
        display: block;
    }
}

@media (max-width: 768px) {
    .navbar {
        z-index: 8848;
    }
    .upload-file > a > img {
        width: 100%;
    }
    .dialog-select {
        width: 90%;
    }
    .upload-area {
        padding: 0;
        margin-right: auto;
        margin-left: auto;
        width: 95%;
    }
    .navbar-toggler {
        display: block;
    }

    .site {
        margin-top: 0px;
    }
}